Answer:
The answer to the question is;
The probability that the resulting sample mean of nicotine content will be less than 0.89 is 0.1587 or 15.87 %.
Step-by-step explanation:
The mean of the distribution = 0.9 mg
The standard deviation of the sample = 0.1 mg
The size of the sample = 100
The mean of he sample = 0.89
The z score for sample mean is given by
where
X = Mean of the sample
μ = Mean of the population
σ = Standard deviation of the population
Therefore Z =
= -1
From the standard probabilities table we have the probability for a z value of -1.0 = 0.1587
Therefore the probability that the resulting sample mean will be less than 0.89 = 0.1587 That is the probability that the mean is will be less than 0.89 is 15.87 % probability.
Question is Incomplete;Complete question is given below;
Jerry sold 7/20 of the total number of tickets that were sold for the spring band concert. What percent of the total number of tickets did jerry sell.
Answer:
Jerry sold 35 % of the total tickets.
Step-by-step explanation:
Given:
Jerry sold tickets =
of total number of tickets
We need to find the percent of the total number of tickets Jerry sold.
Solution:
to find the percent of the total number of tickets Jerry sold we need to multiply the fraction by 100 we get;
framing in equation form we get;
Percent of the total number of tickets Jerry sold = 
Hence Jerry sold 35 % of the total tickets.
Answer:
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Step-by-step explanation: